'use client';

import Scribble from '@/components/Scribble';
import { Button, Container, Heading, Section } from '@/components/ui';
import { useTranslations, useLocale } from 'next-intl';
import dynamic from 'next/dynamic';
import { useAnalytics } from '../analytics/useAnalytics';
import { AnalyticsEvents } from '../analytics/analytics-events';
import { useState, useEffect, useRef, useCallback } from 'react';
import { ChevronRight } from 'lucide-react';
import { AISearchResults } from '../search/AISearchResults';
const HeroIllustration = dynamic(() => import('./HeroIllustration'), { ssr: false });
const AIOrb = dynamic(() => import('../search/AIOrb'), { ssr: false });

export default function Hero({ data }: { data?: any }) {
  const t = useTranslations('Home.hero');
  const locale = useLocale();
  const { trackEvent } = useAnalytics();

  const [searchQuery, setSearchQuery] = useState('');
  const [isSearchOpen, setIsSearchOpen] = useState(false);
  const [heroPlaceholder, setHeroPlaceholder] = useState(
    'Projekt beschreiben oder Kabel suchen...',
  );
  const typingRef = useRef<ReturnType<typeof setTimeout> | null>(null);

  const HERO_PLACEHOLDERS = [
    'Querschnittsberechnung für 110kV Trasse', // Hochspannung
    'Wie schwer ist NAYY 4x150?',
    'Ich plane einen Solarpark, was brauche ich?', // Projekt Solar
    'Unterschied zwischen N2XSY und NAY2XSY?', // Fach
    'Mittelspannungskabel für Windkraftanlage', // Windpark
    'Welches Aluminiumkabel für 20kV?', // Mittelspannung
  ];

  // Typing animation for the hero search placeholder
  useEffect(() => {
    if (searchQuery) {
      setHeroPlaceholder('Projekt beschreiben oder Kabel suchen...');
      return;
    }

    let textIdx = 0;
    let charIdx = 0;
    let deleting = false;

    const tick = () => {
      const fullText = HERO_PLACEHOLDERS[textIdx];

      if (deleting) {
        charIdx--;
        setHeroPlaceholder(fullText.substring(0, charIdx));
      } else {
        charIdx++;
        setHeroPlaceholder(fullText.substring(0, charIdx));
      }

      let delay = deleting ? 30 : 70;

      if (!deleting && charIdx === fullText.length) {
        delay = 2500;
        deleting = true;
      } else if (deleting && charIdx === 0) {
        deleting = false;
        textIdx = (textIdx + 1) % HERO_PLACEHOLDERS.length;
        delay = 400;
      }

      typingRef.current = setTimeout(tick, delay);
    };

    typingRef.current = setTimeout(tick, 1500);

    return () => {
      if (typingRef.current) clearTimeout(typingRef.current);
    };
  }, [searchQuery]);

  const handleSearchSubmit = (e: React.FormEvent) => {
    e.preventDefault();
    if (searchQuery.trim()) {
      setIsSearchOpen(true);
    }
  };

  return (
    <>
      <Section className="relative min-h-[85vh] md:h-[90vh] flex flex-col items-center justify-center overflow-hidden bg-primary py-12 md:py-0 lg:py-0">
        <Container className="relative z-10 text-center md:text-left text-white w-full order-2 md:order-none">
          <div className="max-w-5xl mx-auto md:mx-0">
            <div>
              <Heading
                level={1}
                className="text-center md:text-left mb-6 md:mb-8 md:max-w-none text-white text-4xl sm:text-5xl md:text-7xl font-extrabold [text-shadow:_-2px_-2px_0_#002b49,_2px_-2px_0_#002b49,_-2px_2px_0_#002b49,_2px_2px_0_#002b49,_-2px_0_0_#002b49,_2px_0_0_#002b49,_0_-2px_0_#002b49,_0_2px_0_#002b49]"
              >
                {data?.title ? (
                  <span
                    dangerouslySetInnerHTML={{
                      __html: data.title
                        .replace(
                          /<green>/g,
                          '<span class="relative inline-block"><span class="relative z-10 text-accent italic inline-block">',
                        )
                        .replace(
                          /<\/green>/g,
                          '</span><div class="w-[140%] h-[140%] -top-[20%] -left-[20%] text-accent/30 hidden md:block absolute -z-10 animate-in fade-in zoom-in-0 duration-1000 ease-out fill-mode-both" style="animation-delay: 500ms;"><Scribble variant="circle" /></div></span>',
                        ),
                    }}
                  />
                ) : (
                  t.rich('title', {
                    green: (chunks) => (
                      <span className="relative inline-block">
                        <span className="relative z-10 text-accent italic inline-block">
                          {chunks}
                        </span>
                        <div
                          className="w-[140%] h-[140%] -top-[20%] -left-[20%] text-accent/30 hidden md:block absolute -z-10 animate-in fade-in zoom-in-0 duration-1000 ease-out fill-mode-both"
                          style={{ animationDelay: '500ms' }}
                        >
                          <Scribble variant="circle" />
                        </div>
                      </span>
                    ),
                  })
                )}
              </Heading>
            </div>
            <div>
              <p className="text-lg md:text-xl text-white leading-relaxed max-w-2xl mb-10 md:mb-12">
                {data?.subtitle || t('subtitle')}
              </p>
            </div>
            <form
              onSubmit={handleSearchSubmit}
              className="w-full max-w-2xl bg-white/10 backdrop-blur-md border border-white/20 rounded-2xl p-2 flex items-center mt-8 mb-10 transition-all focus-within:bg-white/15 focus-within:border-accent shadow-lg relative"
            >
              <div className="absolute left-1 w-20 h-20 flex items-center justify-center z-10 overflow-visible">
                <AIOrb isThinking={false} />
              </div>
              <input
                type="text"
                value={searchQuery}
                onChange={(e) => setSearchQuery(e.target.value)}
                placeholder={heroPlaceholder}
                className="flex-1 bg-transparent border-none text-white pl-20 pr-2 py-4 placeholder:text-white/50 focus:outline-none text-lg lg:text-xl"
                autoFocus
              />
              <Button
                type="submit"
                variant="accent"
                size="lg"
                className="rounded-xl px-6 py-4 shrink-0 flex items-center shadow-md font-bold cursor-pointer hover:bg-accent hover:brightness-110"
              >
                Fragen
                <ChevronRight className="w-5 h-5 ml-2 -mr-1" />
              </Button>
            </form>

            <div className="flex flex-col sm:flex-row justify-center md:justify-start gap-4 md:gap-6">
              <div>
                <Button
                  href="/contact"
                  variant="white"
                  size="lg"
                  className="group w-full sm:w-auto h-14 md:h-16 px-8 md:px-10 text-base md:text-lg hover:scale-105 transition-all outline-none"
                  onClick={() =>
                    trackEvent(AnalyticsEvents.BUTTON_CLICK, {
                      label: data?.ctaLabel || t('cta'),
                      location: 'home_hero_primary',
                    })
                  }
                >
                  {data?.ctaLabel || t('cta')}
                  <span className="transition-transform group-hover/btn:translate-x-1 ml-2">
                    &rarr;
                  </span>
                </Button>
              </div>
              <div>
                <Button
                  href={`/${locale}/${locale === 'de' ? 'produkte' : 'products'}`}
                  variant="outline"
                  size="lg"
                  className="group w-full sm:w-auto h-14 md:h-16 px-8 md:px-10 text-base md:text-lg text-white border-white/30 hover:bg-white/10 hover:border-white transition-all"
                  onClick={() =>
                    trackEvent(AnalyticsEvents.BUTTON_CLICK, {
                      label: data?.secondaryCtaLabel || t('exploreProducts'),
                      location: 'home_hero_secondary',
                    })
                  }
                >
                  {data?.secondaryCtaLabel || t('exploreProducts')}
                </Button>
              </div>
            </div>
          </div>
        </Container>

        <div className="relative md:absolute inset-0 z-0 w-full h-[40vh] md:h-full order-1 md:order-none mb-[-80px] md:mb-0 mt-[80px] md:mt-0 overflow-visible pointer-events-none animate-in fade-in zoom-in-95 duration-1000 ease-out fill-mode-both">
          <HeroIllustration />
        </div>

        <div
          className="absolute bottom-6 md:bottom-10 left-1/2 -translate-x-1/2 hidden sm:block animate-in fade-in slide-in-from-bottom-4 duration-1000 ease-out fill-mode-both"
          style={{ animationDelay: '2000ms' }}
        >
          <div className="w-6 h-10 border-2 border-white/30 rounded-full flex justify-center p-1">
            <div className="w-1 h-2 bg-white rounded-full animate-bounce" />
          </div>
        </div>
      </Section>
      <AISearchResults
        isOpen={isSearchOpen}
        onClose={() => setIsSearchOpen(false)}
        initialQuery={searchQuery}
        triggerSearch={true}
      />
    </>
  );
}